'\" te
.\" Copyright (c) 2005, Sun Microsystems, Inc. All Rights Reserved.
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.TH LGRP_MEM_SIZE 3LGRP "Jan 26, 2005"
.SH NAME
lgrp_mem_size \- return the memory size of the given lgroup
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR\&.\|.\|. ] \fIfile\fR\&.\|.\|. \fB-llgrp\fR [ \fIlibrary\fR\&.\|.\|. ]
#include <sys/lgrp_user.h>

\fBlgrp_mem_size_t\fR \fBlgrp_mem_size\fR(\fBlgrp_cookie_t\fR \fIcookie\fR, \fBlgrp_id_t\fR \fIlgrp\fR,
     \fBint\fR \fItype\fR, \fBint\fR \fIcontent\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBlgrp_mem_size()\fR function takes a \fIcookie\fR representing a snapshot
of the lgroup hierarchy. The \fIcookie\fR was obtained by calling
\fBlgrp_init\fR(3LGRP). The \fBlgrp_mem_size()\fR function returns the memory
size of the given lgroup in bytes. The \fItype\fR argument should be set to one
of the following values:
.sp
.in +2
.nf
LGRP_MEM_SZ_FREE                /* free memory */
LGRP_MEM_SZ_INSTALLED           /* installed memory */
.fi
.in -2

.sp
.LP
The \fIcontent\fR argument should be set to one of the following values to
specify whether the direct contents or everything in this lgroup should be
returned:
.sp
.in +2
.nf
LGRP_CONTENT_ALL        /* everything in this lgroup */
LGRP_CONTENT_DIRECT     /* directly contained in lgroup */
LGRP_CONTENT_HIERARCHY  /* everything within this hierarchy (for */
                           compatibility only, use LGRP_CONTENT_ALL) */
.fi
.in -2

.sp
.LP
The \fBLGRP_CONTENT_HIERARCHY\fR value can still be used, but is being replaced
by \fBLGRP_CONTENT_ALL\fR.
.sp
.LP
The total sizes include all the memory in the lgroup including its children,
while the others reflect only the memory contained directly in the given
lgroup.
.SH RETURN VALUES
.sp
.LP
Upon successful completion, the size in bytes is returned. Otherwise, \(mi1 is
returned and \fBerrno\fR is set to indicate the error.
.SH ERRORS
.sp
.LP
The \fBlgrp_mem_size()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 10n
The specified cookie, lgroup ID, or one of the flags is not valid.
.RE

.sp
.ne 2
.na
\fB\fBESRCH\fR\fR
.ad
.RS 10n
The specified lgroup ID was not found.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Evolving
_
MT-Level	MT-Safe
.TE

.SH SEE ALSO
.sp
.LP
.BR lgrp_cpus (3LGRP),
.BR lgrp_init (3LGRP),
.BR lgrp_resources (3LGRP),
.BR liblgrp (3LIB),
.BR attributes (7)
